I am writing a bash script to run a bunch of Mathematica .nb files serially. So I thought I'd convert my Mathematica cells into initialization cells. However, I notice that the initialization cell isn't run on start up unless I evaluate it using Shift + Enter or Command + Enter.

Is it not an initialization cell that I am looking for?

Steps I took to make my cell an initialization cell:

Selected the cell with mouse click

Cell > Cell properties > Initialization cell

Edit

I just added InitializationCellEvaluation -> True as the first line of my file. However, how should I make this evaluatable?

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